This book is a comprehensive description of known results on the controllability of possibly non-autonomous two-time-scales singularly perturbed control systems with linear dynamics. The results are based on a series of papers by the author himself. The proofs given in the book provide more details, and most results are obtained here in a generalized setting . All results are richly illustrated by academic and application oriented examples. (Mario Sigalotti, Mathematical Reviews, October, 2022) The book is rich in content and detailed in proof. One of the biggest features of this book is that theoretical results, obtained in the book, are illustrated by numerous examples which is more convenient for readers to read and understand. The book can be helpful for researchers and engineers, working in electrical engineering, mechanical and aerospace engineering . (Liping Chen, zbMATH 1472.93014, 2021)